Editor Bill Marimow will be leaving the Philadelphia Inquirer over a “difference in philosophical vision in the direction of the paper” with Publisher Bob Hall, a source tells Poynter’s Andrew Beaujon. Whether the difference was philosophical or something else, it appears to be stark, if this terse memo, obtained by Jim Romenesko, is any indication:

From: Hall, Bob
Sent: Monday, October 07, 2013 11:15 AM
To: All IGM Employees; All Philly.com Employees
Subject: Announcement

Please be advised that effective immediately, Bill Marimow is no longer employed by Interstate General Media, Inc. We wish Bill well in his future endeavors. Stan Wischnowski will become acting editor of The Philadelphia Inquirer.

Romenesko reports that the situation may well be a reflection of divisions within the Inquirer’s unwieldy ownership group, and that this thing may not be over just yet. Marimow served as editor of the paper from 2006-2010 but returned to re-helm the property in May 2012 following its purchase by Interstate General Media, whose leaders include southern New Jersey political force George E. Norcross III and businessman Lewis Katz, among others.